Ground cooling and dehumidifying unit

Abstract

The utility model discloses a ground refrigeration dehumidification unit, including basic pipeline and ground cooling pipeline, the compressor, first heat exchanger, throttling element, second heat exchanger and first valve are set gradually on basic pipeline, and ground cooling pipeline is parallelly connected in second heat exchanger and first valve one side and is provided with third heat exchanger and second valve on ground cooling pipeline, and the ground heating return water pipe and ground heating inlet pipe are connected on third heat exchanger, first heat exchanger includes casing, air draught fan, heat exchange coil pipe and turbulence generating mechanism, the utility model can dock the original ground heating pipe in building, realizes the cooling of indoor through ground heating pipe, and the system whole heat exchange area is big, and the cooling is soft, and it is favorable to energy -conserving and emission -reducing, in addition, turbulence generating mechanism is arranged in first heat exchanger, and it is changed from laminar state to turbulence state before airflow and heat exchange coil pipe contact, and the heat exchange efficiency of airflow and heat exchange coil pipe of turbulence state is higher compared with laminar state, and it is more favorable to the efficient performance of working medium heat exchange process.

Description

Technical Field

[0001] This utility model relates to the field of heating, ventilation and air conditioning equipment, and specifically to a ground-cooled dehumidifier unit. Background Technology

[0002] With social development, underfloor heating is becoming increasingly popular in buildings. Conventional underfloor heating often only undertakes the task of heat dissipation and heating, and does not have the function of cooling and dehumidification in summer. If the existing underfloor heating pipes can be used to achieve indoor cooling, it will have a positive significance for energy conservation and emission reduction. In addition, most of the heat exchangers of existing cooling and dehumidification units are convective heat exchange between airflow and heat exchange finned tubes, which has limited heat exchange efficiency and is not conducive to the efficient heat exchange process of the working fluid, so there is room for improvement. Utility Model Content

[0003] In view of the problems existing in the background art, the purpose of this utility model is to provide a ground-cooled dehumidifier unit, which effectively solves the problems existing in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A ground cooling dehumidifier unit includes a base pipeline and a ground cooling pipeline. The base pipeline is sequentially provided with a compressor, a first heat exchanger, a throttling element, a second heat exchanger, and a first valve. The ground cooling pipeline is connected in parallel to the second heat exchanger and the first valve, and a third heat exchanger and a second valve are provided on the ground cooling pipeline. The third heat exchanger is connected to a ground heating return water pipe and a ground heating inlet water pipe.

[0006] The first heat exchanger includes a shell and, from front to back, a blower, a heat exchange coil, and a turbulence generating mechanism arranged sequentially within the shell. The shell has an air outlet on its front side and symmetrically arranged air inlets on its left and right sides. The turbulence generating mechanism divides the shell cavity into a front chamber and a rear chamber. The turbulence generating mechanism includes several air inlet jackets with openings on both sides. The openings on the left and right sides of the air inlet jackets respectively cooperate with the air inlet windows. A rearward air supply duct is arranged in the middle of the air inlet jacket. A strip-shaped hole communicating with the air inlet jacket is provided on the rearward air supply duct. A vortex generating tube array is symmetrically arranged on the left and right sides of the rearward air supply duct. The vortex generating tube array includes multiple vertical arrays evenly distributed along the left-right direction. Each vertical array includes multiple vortex tube assemblies evenly distributed along the vertical direction. Each vortex tube assembly includes a square tube and a trapezoidal tube. In terms of airflow direction, the square tube is located upstream of the trapezoidal tube. Both the square tube and the trapezoidal tube have openings on their front and rear sides, and the square tube and the trapezoidal tube connect the front chamber and the rear chamber.

[0007] Furthermore, both the air outlet and air inlet windows are equipped with filters.

[0008] Furthermore, the rear compartment is equipped with air guide strips that cooperate with the rearward air supply duct.

[0009] Furthermore, the air guide strip is triangular prism-shaped.

[0010] Furthermore, the first valve is a normally open solenoid valve, and the second valve is a normally closed solenoid valve.

[0011] Furthermore, a flow switch is installed on the underfloor heating water inlet pipe, and the flow switch is connected in series with the first valve and the second valve.

[0012] This utility model has the following beneficial technical effects:

[0013] This utility model can connect to the existing underfloor heating pipes in a building to achieve indoor cooling. The system has a large overall heat exchange area, gentle cooling, and is conducive to energy conservation and emission reduction, providing a good user experience. In addition, the first heat exchanger in this application is equipped with a turbulence generating mechanism, which transforms the airflow from a laminar flow state to a turbulent flow state before it comes into contact with the heat exchange coil. Compared with the laminar flow state, the turbulent flow state has a higher heat exchange efficiency with the heat exchange coil, which is more conducive to the efficient heat exchange process of the working fluid. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the connection relationship in an embodiment of the present utility model;

[0015] Figure 2 This is a top view of the internal structure of the first heat exchanger in this embodiment of the present invention;

[0016] Figure 3 This is a front view of the turbulence generating mechanism in an embodiment of this utility model. Detailed Implementation

[0017] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0018] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," and "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] like Figure 1-3 As shown in the figure, the ground cooling dehumidifier unit described in this embodiment includes a base pipeline 1 and a ground cooling pipeline 2. The base pipeline 1 is sequentially equipped with a compressor 3, a first heat exchanger 4, a throttling element 5, a second heat exchanger 6, and a first valve 7. The throttling element 5 is a capillary tube or an expansion valve. The ground cooling pipeline 2 is connected in parallel to the second heat exchanger 6 and the first valve 7, and a third heat exchanger 8 and a second valve 9 are provided on the ground cooling pipeline 2. The third heat exchanger 8 is connected to a ground heating return water pipe 10 and a ground heating inlet water pipe 11. Preferably, the first valve 7 is a normally open solenoid valve, the second valve 9 is a normally closed solenoid valve, and a flow switch 12 is provided on the ground heating inlet water pipe 11. The flow switch 12 is connected in series with the first valve 7 and the second valve 9, and a power supply is provided in the series circuit.

[0020] When cooling is not performed using underfloor heating pipes, flow switch 12 is closed, and both the first valve 7 and the second valve 9 are not energized. The first valve 7 is open and the second valve 9 is closed. At this time, the working fluid, after being powered by the compressor 3, released heat by the first heat exchanger 4, and passed through the throttling element 5, reaches the second heat exchanger 6 to absorb heat and achieve cooling. The second heat exchanger 6 is air-cooled, and the airflow convects with the wall of the second heat exchanger 6 for heat exchange. While the airflow cools down, some water vapor condenses, which can achieve dehumidification. When cooling is performed using underfloor heating pipes, flow switch 12 is open, and both the first valve 7 and the second valve 9 are energized. The first valve 7 is closed and the second valve 9 is open. At this time, the working fluid, after being powered by the compressor 3, released heat by the first heat exchanger 4, and passed through the throttling element 5, reaches the third heat exchanger 8 to absorb heat. The water in the underfloor heating pipes releases heat on the inner wall of the third heat exchanger 8, thereby cooling the water in the underfloor heating pipes and lowering the room temperature.

[0021] The first heat exchanger 4 includes a shell 13 and an induced draft fan 14, a heat exchange coil 15, and a turbulence generating mechanism arranged sequentially from front to back within the shell 13. An air outlet 16 is provided on the front side of the shell 13, and air inlets 17 are symmetrically arranged on the left and right sides. Both the air outlet 16 and the air inlets 17 are equipped with filters. The turbulence generating mechanism divides the inner cavity of the shell 13 into a front chamber 18 and a rear chamber 19. The turbulence generating mechanism includes two air inlet jackets 20 with openings on both the left and right sides. The openings on the left and right sides of the air inlet jackets 20 are respectively matched with the air inlets 17. The airflow enters the air inlet jackets 20 from the left and right sides of the air inlets 17.

[0022] A rearward air supply duct 21 is provided in the middle of the air inlet jacket 20. The rearward air supply duct 21 has an opening at its rear side and a strip-shaped hole 22 communicating with the air inlet jacket 20. A vortex generating tube array is symmetrically arranged on the left and right sides of the rearward air supply duct 21. The vortex generating tube array includes multiple vertical arrays evenly distributed in the left-right direction. Each vertical array includes multiple vortex tube assemblies evenly distributed in the vertical direction. Each vortex tube assembly includes a square tube 23 and a trapezoidal tube 24. In terms of airflow direction, the square tube 23 is located upstream of the trapezoidal tube 24. The trapezoidal tube 24 has an isosceles trapezoidal cross-section, with the longer side of the parallel side of the isosceles trapezoid facing the incoming air direction. Both the front and rear sides of the square tube 23 and the trapezoidal tube 24 are open. The square tube 23 and the trapezoidal tube 24 connect the front compartment 18 and the rear compartment 19. The rear compartment 19 is provided with a guide strip 25 that cooperates with the rear air supply duct 21. The guide strip 25 is set vertically, and its height is not less than the rear opening of the rear air supply duct 21. The guide strip 25 is triangular prism-shaped. The guide strip 25 distributes the airflow on the left and right sides of the rear compartment 19, so that it can better reach the front compartment 18 through the vortex generating tube array at various locations. Multiple horizontal needle rods can also be evenly distributed on the rear inner wall of the shell 13. The arrangement of the needle rods can cut and stir the airflow entering the rear compartment 19, further disrupting the stable state of the airflow.

[0023] The first heat exchanger 4 does not use the traditional rear air intake method but adopts the left and right side air intake method, which is more sufficient and can be guaranteed. Traditional rear air intake heat exchangers are limited by the installation position and are often close to the wall, and the air intake is close to the wall, which affects the full air intake.

[0024] When the first heat exchanger 4 is working, the working fluid delivered by the compressor 3 releases heat in the heat exchange coil 15. External airflow enters the air inlet jacket 20 from the left and right sides under the influence of the induced draft fan 14, then flows in from both sides. As it passes through the vortex generator array, multiple airflow vortices are generated downstream of the vortex tube assembly. The airflow vortices on both sides of the rear air duct 21 enter through the strip-shaped holes 22 and collide and break up, generating turbulent airflow. This turbulent airflow flows rearward into the rear compartment 19, then turns and passes through the vortex tube assembly to reach the front compartment 18, where it convects and dissipates heat with the heat exchange coil 15. The vortex tube assembly serves both to dissipate heat and to generate turbulent airflow. The vortex generator also functions as a connecting pipe. Compared with the prior art, the first heat exchanger 4 in this embodiment is equipped with a turbulence generating mechanism, which transforms the airflow from a laminar flow state to a turbulent flow state before it comes into contact with the heat exchange coil 15. Compared with the laminar flow state, the turbulent flow state has a higher heat exchange efficiency with the heat exchange coil 15, which is more conducive to the efficient heat exchange process of the working fluid. In addition, this embodiment can be connected to the existing underfloor heating pipes in the building to achieve indoor cooling through the underfloor heating pipes. The system has a large overall heat exchange area, gentle cooling, and is conducive to energy conservation and emission reduction, providing a good user experience.

[0025] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A refrigeration and dehumidification unit, characterized in that, It includes a basic pipeline and a floor cooling pipeline. The basic pipeline is equipped with a compressor, a first heat exchanger, a throttling element, a second heat exchanger and a first valve in sequence. The floor cooling pipeline is connected in parallel to the second heat exchanger and the first valve, and a third heat exchanger and a second valve are installed on the floor cooling pipeline. The third heat exchanger is connected to a floor heating return pipe and a floor heating inlet pipe. The first heat exchanger includes a shell and, from front to back, a blower, a heat exchange coil, and a turbulence generating mechanism arranged sequentially within the shell. The shell has an air outlet on its front side and symmetrically arranged air inlets on its left and right sides. The turbulence generating mechanism divides the shell cavity into a front chamber and a rear chamber. The turbulence generating mechanism includes several air inlet jackets with openings on both sides. The openings on the left and right sides of the air inlet jackets respectively cooperate with the air inlet windows. A rearward air supply duct is arranged in the middle of the air inlet jacket. A strip-shaped hole communicating with the air inlet jacket is provided on the rearward air supply duct. A vortex generating tube array is symmetrically arranged on the left and right sides of the rearward air supply duct. The vortex generating tube array includes multiple vertical arrays evenly distributed along the left-right direction. Each vertical array includes multiple vortex tube assemblies evenly distributed along the vertical direction. Each vortex tube assembly includes a square tube and a trapezoidal tube. In terms of airflow direction, the square tube is located upstream of the trapezoidal tube. Both the square tube and the trapezoidal tube have openings on their front and rear sides, and the square tube and the trapezoidal tube connect the front chamber and the rear chamber.

2. The ground-cooled dehumidifier unit according to claim 1, characterized in that, Both the air outlet and air inlet windows are equipped with filters.

3. The ground-cooled dehumidifier unit according to claim 1, characterized in that, The rear compartment is equipped with air guide strips that cooperate with the rearward air supply duct.

4. A ground-cooled dehumidifier unit according to claim 3, characterized in that, The air guide strip is triangular prism-shaped.

5. A ground-cooled dehumidifier unit according to claim 1, characterized in that, The first valve is a normally open solenoid valve, and the second valve is a normally closed solenoid valve.

6. A ground-cooled dehumidifier unit according to claim 5, characterized in that, A flow switch is installed on the underfloor heating water inlet pipe, and the flow switch is connected in series with the first valve and the second valve.

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